All categories

3 years ago

Helppppppp pleaseee

Mathematics

1 answer:

Viktor [21]3 years ago

5 0

Answer:

$x=2\sqrt{5}$

Step-by-step explanation:

If that is a square, then all sides are the same. Therefore, it's a $\sqrt{10}$ by $\sqrt{10}$ shape. We'll use Pythagorean Theorem to find the diagonal.

$a^2+b^2=c^2\\\sqrt{10}^2+ \sqrt{10}^2=x^2\\10+10=x^2\\20=x^2\\\sqrt{20}=x\\\sqrt{4*5}=x\\ 2\sqrt{5}=x$

Since it's not a fraction, there is no denominator to rationalize. Let me know if you have any other questions!

You might be interested in

Need a quick answer please!

ANTONII [103]

Answer:

It’s going to be b

Step-by-step explanation:

Because add then then divide then put the x on top and simplify then and then subtract

7 0

3 years ago

Instructions: If varies inversely as and =2 when =8, find when =2. Write the equation using the given information, then use the

grigory [225]

Solution:

Given that;

varies inversely as

$\begin{gathered} y\propto x \\ The\text{ expression ecomes the equation below} \\ y=kx \\ Where\text{ k is the constant} \end{gathered}$

=2 when =8,

$\begin{gathered} y=kx \\ 2=k(8) \\ k=\frac{2}{8}=\frac{1}{4} \\ k=\frac{1}{4} \end{gathered}$

The equation becomes

$\begin{gathered} y=kx \\ y=\frac{1}{4}x \end{gathered}$

The value of when =2

$\begin{gathered} y=\frac{1}{4}x \\ y=\frac{1}{4}(2)=\frac{2}{4}=\frac{1}{2} \\ y=\frac{1}{2} \end{gathered}$

Hence, y = 1/2

3 0

1 year ago

reflection symmetry is the quality a design has if it maintains all characteristics when it is rotated about an axis lying in it

OlgaM077 [116]

Answer:

True if reflection over a line.

Step-by-step explanation:

Given that there is a reflection symmetry. We have to discuss about the quality of the design.

By reflection , we mean it can be either on a line or on a point.

If symmetry is on a line, then we get a mirror image of the original one keeping the line of symmetry as mirror. Hence in this case when rotated about axis of symmetry lying it its plane the original design would be maintained.

Examples are : Circles, ellipses, hyperbolas, etc.

Reflection about a point is obtained by keeping equal distance form the point.

For example, reflection of (1,1) over origin would be (-1,-1)

Here the rotation quality may not apply

8 0

3 years ago

Read 2 more answers

Which figure has the correct lines of symmetry drawn in?

RoseWind [281]

Its actually the first one because its a hexagon and that line Is the only line that can cut the shape in half

4 0

4 years ago